/*
 * @(#)Example.java	1.0 Apr 18, 2008
 *
 *	The MIT License
 *
 *	Copyright (c) 2008 Malachi de AElfweald <malachid@gmail.com>
 *
 *	Permission is hereby granted, free of charge, to any person obtaining a copy
 *	of this software and associated documentation files (the "Software"), to deal
 *	in the Software without restriction, including without limitation the rights
 *	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 *	copies of the Software, and to permit persons to whom the Software is
 *	furnished to do so, subject to the following conditions:
 *
 *	The above copyright notice and this permission notice shall be included in
 *	all copies or substantial portions of the Software.
 *
 *	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 *	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 *	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 *	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 *	THE SOFTWARE.
 */
package org.eoti.io.console.shell;

import org.kohsuke.args4j.CmdLineException;
import org.kohsuke.args4j.Option;

import java.io.File;
import java.io.IOException;

public class Example extends Shell
{
	@Option(name="-dir", usage="working directory")
	protected File WORKING_DIR = null;

	public static void main(String ... args)
			throws CmdLineException, IOException
	{
		Example ex = new Example(args);
	}

	public Example(String ... args)
			throws CmdLineException, IOException
	{
		super(args);
		setName("ExampleShell");
		format("Welcome to %s\n", getName());
		format("To login, use 'root' as username and 'fake' as password.\n");
		startShell();
	}

	public void setDefaults()
	{
		super.setDefaults();
		setEnv(DefinedEnv.DEFAULT_CURDIR, WORKING_DIR);
		setEnv(DefinedEnv.prompt, "{"+DefinedEnv.curdir+"}> ");
	}

	protected void parseCommandLine() throws CmdLineException
	{
		if(WORKING_DIR == null)
			throw new CmdLineException("-dir is a required option.");
	}

	protected String authorize(String username, char[] password)
			throws ShellException
	{
		if(!username.equals("root")) throw new ShellException(this, null, "Unknown user.", false);
		if(!(new String(password)).equals("fake")) throw new ShellException(this, null, "Invalid password.", false);
		return String.format("Welcome %s\n", username);
	}
}
